#### Is this adding or improving a _feature_ or fixing a _bug_?
Improvement.
#### What's the new behavior?
This introduces two new models: `Decoration` and `Selection`, which both implement the simpler `Range` interface. This way we can introduce properties to these concepts without having to have them live on all ranges, and we can start to introduce more helpful methods specific to each one's needs.
It also means we don't need to move `isFocused` to value, which saves some complexity on the operations side, retaining `set_selection` as the only way selections are modified.
In the process, it also cleans up a lot of the existing model logic for implementing the `Node` interface, and introduces another `Common` interface for shared properties of all Slate models.
#### How does this change work?
It introduces a new `interfaces/` directory where common sets of properties can be declared, and mixed in to the models with the new (simple) `mixin` utility.
#### Have you checked that...?
* [x] The new code matches the existing patterns and styles.
* [x] The tests pass with `yarn test`.
* [x] The linter passes with `yarn lint`. (Fix errors with `yarn prettier`.)
* [x] The relevant examples still work. (Run examples with `yarn watch`.)
#### Does this fix any issues or need any specific reviewers?
Fixes: #1952Fixes: #1807
Fixes: https://github.com/ianstormtaylor/slate/issues/2110
* use fragment instead of node transfer type on drag
* remove the range.isCollapsed check in Changes.deleteAtRange so that it will also remove the selection when only a void node is selected
* fix selection before starting the drag
* fix linting errors
* review fixes
* align with new way of handling void nodes via schema
#### Is this adding or improving a _feature_ or fixing a _bug_?
Improvement.
#### What's the new behavior?
This deprecates the `node.isVoid` property in favor of using `schema.isVoid(node)`, which will allow us to remove the hardcoded "void" concept from the data model, and have it depend on the schema instead.
This allows you to build different kinds of editors, with different void semantics, depending on your use case, without having this information hardcoded in the data itself. Even switching the `isVoid` semantics on the fly based on a user toggling a setting for example.
#### How does this change work?
This is the first step, which just deprecates `node.isVoid`, and provides the new alternative of `schema.isVoid(node)`, while still using the `isVoid` value of nodes under the covers.
The next step is to change the logic to search the schema for real, and completely remove the `isVoid` value from nodes.
#### Have you checked that...?
<!--
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* [x] The new code matches the existing patterns and styles.
* [x] The tests pass with `yarn test`.
* [x] The linter passes with `yarn lint`. (Fix errors with `yarn prettier`.)
* [x] The relevant examples still work. (Run examples with `yarn watch`.)
#### Is this adding or improving a _feature_ or fixing a _bug_?
This should fix `Unable to get property 'childNodes' of undefined or null reference` error in IE11 when using slate-html-serializer and deserializing an empty string (#1757, #1756).
#### What's the new behavior?
The `defaultParseHtml` now returns an empty body element if the parsed body is null.
I tested this in the latest Chrome, Firefox and Safari, and they all seemed to work similarly. If the html param was an empty string, `parseFromString` returned a document element, which had a body property which was an empty body element. In IE11 though the body property was null, which caused the undefined or null reference later.
#### Have you checked that...?
* [x] The new code matches the existing patterns and styles.
* [x] The tests pass with `yarn test`.
* [x] The linter passes with `yarn lint`. (Fix errors with `yarn prettier`.)
* [x] The relevant examples still work. (Run examples with `yarn watch`.)
* Trying to use memoization and upgrade to react v16
* Fix error
* Fix error
* Fix handlers error
* Add annotation
* Remove EventHandlers
* No state
* Remove un-necessary polyfill
* Remove un-necessary polyfill
* Remove un-necessary handlers settings
* Early Return
* Fix Early Return
* Fix onChange
* Do not run onChange stack twice on same change
* Update annotation
* Better sense of resolve++
* Cache value in onChange and didMount
* Remove un-necessary rechack
* Renaming
* Remove change in leaf.js
* Handlers as this.handlers
* do not re-initialize change in onChange
* Re-run onChange stack only when change happens
* Update value when stack changes
* Rename to memoize-one
* queue changes
* Unify interface
* Fix bug
* Add document
* Remove id
* Do not use map
* Fix bug
* Fix eslint
* Fix update when props.value changes
* Add annotation
* Fix stack
* Inline queueChange
* Restore onChange
* restore onChange
* Refactor change and onChange
* Use onChange as the single interface for update
* Do not flushChange if inside event
* Give a warning about synchronous editor.change call
* Change isInChange in editor.change
* refactor resolution and tmp logic, cleanup code
#### Is this adding or improving a _feature_ or fixing a _bug_?
Debt.
#### What's the new behavior?
`createHyperscript` takes an options object that now looks for the `decorations` property instead of the `decorators` property
#### How does this change work?
Pretty straightforward rename of an option, then all of its uses and wherever the term decorators showed up in docs
#### Have you checked that...?
* [x] The new code matches the existing patterns and styles.
* [x] The tests pass with `yarn test`.
* [x] The linter passes with `yarn lint`. (Fix errors with `yarn prettier`.)
* [x] The relevant examples still work. (Run examples with `yarn watch`.)
#### Does this fix any issues or need any specific reviewers?
Fixes: #1996
Reviewers: @ianstormtaylor
#### Is this adding or improving a _feature_ or fixing a _bug_?
Bug.
#### What's the new behavior?
All normalizing change methods should use `normalize: false` otherwise the normalization can recurse and cause strange errors.
#### Have you checked that...?
<!--
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-->
* [x] The new code matches the existing patterns and styles.
* [x] The tests pass with `yarn test`.
* [x] The linter passes with `yarn lint`. (Fix errors with `yarn prettier`.)
* [x] The relevant examples still work. (Run examples with `yarn watch`.)
* Adds Unicode LF character to line endings for clipboard plaintext
This addresses https://github.com/ianstormtaylor/slate/issues/1932
* Fixes plaintext/unicode pastes not having line breaks
* Removes stray spaces for Prettier
* Refactors Value creation to save 4 lines
* Allows for Ctrl+Backspace on line start
Previously Ctrl+Backspace would do nothing instead of continuing on to the above block.
* Tests that deleteWordBackwards joins lines properly
* Adds Unicode LF character to line endings for clipboard plaintext
This addresses https://github.com/ianstormtaylor/slate/issues/1932
* Fixes plaintext/unicode pastes not having line breaks
* Removes stray spaces for Prettier
* Refactors Value creation to save 4 lines
* Run mocha test with module alias
* Running test with babel module alias
* Fix model alias
* Fix model alias
* Resolve module alias
* Running test with babel module alias
* Connect to codecov
* add codecov to travis
* stop if yarn test has errors
* Still cannot collect data from slate modules
* Try to check whether it works with codecov
* Move config to nycrc
* Remove nyc require
* Update nyc to use src
* better before_script
